A slidable receiver cover structure and method of use

Abstract

The application discloses a sliding receiver cover structure and a using method thereof, which has the characteristics of quickness, convenience and high efficiency. The structure comprises a connecting seat, a receiver cover sliding seat and a receiver cover. The connecting seat is fixed on a gun body. A T-shaped guide rail is arranged on the connecting seat in the transverse direction. A T-shaped groove is arranged on the receiver cover sliding seat and matched with the T-shaped guide rail. An installation hole is arranged at one end of the T-shaped guide rail. A sliding clamp and a clamp spring are installed in the installation hole. When the sliding clamp is located at the lower limit position, the receiver cover sliding seat can slide in the transverse direction. Clamp grooves are arranged at the transverse ends of the receiver cover sliding seat respectively. The sliding clamp can extend out of the clamp groove and be located at the upper limit position, so as to lock the transverse position of the receiver cover sliding seat. The two clamp grooves correspond to the installation in place state and the sliding position state of the receiver cover sliding seat. The receiver cover is connected to the receiver cover sliding seat.

Description

Technical Field

[0001] This invention relates to the field of firearms technology, and in particular to a slide-out receiver cover structure and its method of use. Background Technology

[0002] With the continuous optimization of firearm design and manufacturing technology, the effective range of active light machine guns has reached 600 meters, general-purpose machine guns 1000 meters, and heavy machine guns can reach more than 1500 meters. In order to ensure that machine guns can play a better role in fire suppression, they often need to be equipped with optical sights of a certain magnification. When the distance is long, the sights are often longer.

[0003] In traditional machine guns, the initial loading process typically involves opening and rotating the receiver cover at a certain angle, attaching the first ammunition belt to the feed chuck, and then closing the receiver cover. However, when firing at long range, the installation of a long optical sight may cause interference with the opening of the receiver cover, making the initial loading process inconvenient or even impossible. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a sliding ammunition receiver cover structure and its usage method, which can complete the loading of the first round of machine gun ammunition belt without disassembling the sight, and has the characteristics of being fast, convenient and efficient when in use.

[0005] The objective of this invention is achieved as follows:

[0006] A slidable receiver cover structure includes a connecting seat, a receiver cover slide, and a receiver cover.

[0007] The connecting seat is fixed to the gun body. A T-shaped guide rail is provided on the connecting seat along the horizontal direction. The receiver cover slide is provided with a T-shaped groove that cooperates with the T-shaped guide rail. One end of the T-shaped guide rail is provided with a mounting hole. A sliding latch is installed in the mounting hole. A latch spring is provided between the sliding latch and the bottom of the mounting hole. A latch pin hole is provided on the T-shaped guide rail along the longitudinal direction. A latch limiting pin is inserted into the latch pin hole. A latch limiting groove is provided on the sliding latch. The latch limiting pin passes through the latch limiting groove and limits the extreme position of the sliding latch. When the sliding latch is at the lower extreme position, the receiver cover slide can slide laterally. The two ends of the receiver cover slide are provided with latch slots. The sliding latch can extend out of the latch slots and be at the upper extreme position to lock the lateral position of the receiver cover slide. The two latch slots correspond to the installed state and the sliding clearance state of the receiver cover slide. The receiver cover is connected to the receiver cover slide.

[0008] Preferably, the lower end of the sliding latch has an axial hole, and the latch spring is located inside the axial hole of the sliding latch.

[0009] Preferably, the munition receiver cover slide and the munition receiver cover are hinged together by a munition receiver cover pivot.

[0010] Preferably, a receiver cover spring is fitted onto the receiver cover shaft. The receiver cover spring 9 is a cylindrical torsion spring, which supports the receiver cover when it is open, facilitating the initial loading and troubleshooting.

[0011] Preferably, the magazine cover slide and the magazine cover pivot are provided with a pin hole, into which a pin is inserted to fix the magazine cover pivot. This prevents the magazine cover pivot from malfunctioning due to mechanical vibration during firearm firing.

[0012] A method of using a slidable receiver cover structure.

[0013] The gun body is equipped with a sight. When the receiver cover slide is in the installed position, the sight interferes with the open receiver cover.

[0014] Press the sliding latch downwards to the lower limit position. The receiver cover slide moves the receiver cover laterally to the sliding clearance state. The sliding latch springs up under the action of the latch spring force and locks into a latch groove in the receiver cover slide. Open the receiver cover and hang the first bullet belt on the bullet release tooth.

[0015] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0016] A slide block is added to the front end of the receiver cover, which can slide relative to the connecting seat via a sliding guide rail. The two are fixed in relative position by the slide block latch and latch spring. The first round of machine gun ammunition belt can be loaded without disassembling the sight. It is fast, convenient and efficient in use.

[0017] A T-shaped guide rail is set at the mating point between the receiver cover slide and the connecting seat to reduce its degree of freedom and ensure its sliding reliability. The rear end is connected to the receiver cover through a support lug and fixed by a vertical pin. Two circular slots for the slide tenon to work are set at the left and right ends. The tenons are locked in the slots at the left and right ends of the slide under the action of the tenon spring force, thereby determining whether the receiver cover is in the open or closed state. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the slide block of the receiver cover of the present invention; 101-support lug for connecting with the receiver base, 102-rotating shaft hole, 103-vertical pin hole for fixing with the receiver cover, 104-clamping groove, 105-T-slot.

[0019] Figure 2This is a schematic diagram of the connecting seat of the present invention, used to conveniently show the cooperation relationship with the receiving device seat, the sliding clamp and the clamp spring. 201-T-shaped guide rail, 202-mounting hole, 203-clamp pin hole.

[0020] Figure 3 This is a schematic diagram of the structure of the receiver cover of the present invention. 301 - a support lug for connecting with the receiver cover slide, 302 - a pivot hole on the cover.

[0021] Figure 4 This is a schematic diagram of the sliding latch of the present invention, 401-axial hole, 402-latch limiting groove.

[0022] Figure 5 This is a schematic diagram of the rotating shaft of the receiver cover of the present invention. 501 - a vertical pin hole for fixing the slide of the receiver cover.

[0023] Figure 6 This is an installation diagram of the present invention: 1-receiver cover slide, 2-connecting seat, 3-receiver cover body, 4-sliding latch, 5-receiver cover pivot, 6-receiver cover slide fixing pin, 7-latch spring, 8-latch limiting pin, 9-receiver cover spring.

[0024] Figure 7 This is a schematic diagram of the invention when the receiver cover is slidably opened, at which point the initial ammunition belt can be directly hooked onto the trigger tooth. Wherein, 1-receiver cover slide, 2-connecting seat, 3-receiver cover body, 4-sliding latch, 10-initial ammunition belt, 11-trigger tooth. Arrow 12 indicates the downward pressing direction of the sliding latch 5, and arrow 13 indicates the sliding direction of the receiver cover;

[0025] Figure 8 This is a schematic diagram of the function of the spring cover of the receiver. Detailed Implementation

[0026] The invention will be further described below with reference to the accompanying drawings.

[0027] The receiver cover slide structure in this embodiment is as follows: Figure 1 As shown, two lugs 101 are provided on the left and right, which are connected to the receiver base via the receiver cover pivot. A hole 102 for mounting the receiver cover pivot is provided in the middle of the lug. A pin hole 103 for fixing is provided on the right lug. Two slots 104 are provided on the left and right at the top. When the receiver cover is closed, the sliding latch 4 is locked in the left slot and when it is open, it is locked in the right slot. A T-slot 105 is provided for sliding on the T-slot guide rail of the connecting seat.

[0028] The connecting seat 2 is provided with a T-shaped guide rail 201 for sliding the slide of the receiver cover, and a sliding latch and latch spring mounting hole 202 is provided on the right side, and a latch pin hole 203 is provided in the axial direction of the right side.

[0029] The receiver cover 3 has lugs 301 at both ends for connecting with the receiver cover slide, and the lugs 301 have pivot holes.

[0030] An axial hole 401 is provided at the lower end of the sliding clamp 4, and a clamp limiting groove 402 is provided on the side.

[0031] The right end of the receiver cover pivot 5 is provided with a vertical pin hole 501 for fixing the receiver cover slide.

[0032] After the receiver cover slide is installed in place, Figure 6 As shown, the receiver cover slide 1 and receiver cover 3 are connected by receiver cover pivot 5 and fixed by receiver cover slide fixing pin 6. It is connected to the connecting seat 2 by T-shaped guide rail 201 and T-shaped groove 105. When the slide is slid to the coaxial position of the latch groove 104, the sliding latch and latch spring mounting hole 202, the latch spring 7 and sliding latch 4 are installed into the axial hole 401. The sliding latch is compressed and rotated until its latch limiting groove 402 coincides with the latch pin hole 203 on the connecting seat, then the latch limiting pin 8 is inserted. Then the sliding latch is released and locked in the groove, completing the installation.

[0033] A schematic diagram of the sliding mechanism cover is shown below. Figure 7 As shown, when the sliding latch 4 is pressed down to its limit position, the receiver cover slide 1 can drive the receiver cover 3 to slide through the T-slot 105 on the T-slot guide rail 201 on the connecting seat 2. When it slides to the right to its limit, the sliding latch 4 will spring up under the action of the latch spring force and lock into the slot at the left end of the receiver cover slide. At this time, the receiver cover is in the open state, and the first ammunition belt 10 can be hung on the bullet release tooth 11.

[0034] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A slidable receiver cover structure, characterized in that: The system includes a connecting base, a receiver cover slide, and a receiver cover. The connecting base is fixed to the gun body. A T-shaped guide rail is provided transversely on the connecting base. The receiver cover slide has a T-shaped groove that mates with the T-shaped guide rail. One end of the T-shaped guide rail has a mounting hole. A sliding latch is installed in the mounting hole, and a latch spring is provided between the sliding latch and the bottom of the mounting hole. A latch pin hole is provided longitudinally on the T-shaped guide rail, into which a latch limiting pin is inserted. A latch limiting groove is provided on the sliding latch. The locking pin passes through the locking groove and limits the extreme position of the sliding locking pin. When the sliding locking pin is at the lower extreme position, the receiver cover slide can slide laterally. The receiver cover slide has locking grooves at both ends of the lateral direction. The sliding locking pin can extend out of the locking groove and be at the upper extreme position to lock the lateral position of the receiver cover slide. The two locking grooves correspond to the installed position and sliding clearance position of the receiver cover slide. The receiver cover is connected to the receiver cover slide. How to use: The gun body is equipped with a sight. When the receiver cover slide is in the installed position, the sight interferes with the open receiver cover. Press the sliding latch downwards to the lower limit position. The receiver cover slide moves the receiver cover laterally to the sliding clearance position. The sliding latch springs up under the action of the latch spring and locks into a latch slot in the receiver cover slide. Open the receiver cover and hang the first ammunition belt on the trigger tooth.

2. The slidable receiver cover structure according to claim 1, characterized in that: The lower end of the sliding jaw has an axial hole, and the jaw spring is located inside the axial hole of the sliding jaw.

3. The slidable receiver cover structure according to claim 1, characterized in that: The receiver cover slide and the receiver cover are hinged together by the receiver cover pivot.

4. The slidable receiver cover structure according to claim 3, characterized in that: A receiver cover spring is fitted on the rotating shaft of the receiver cover. The receiver cover spring is a cylindrical torsion spring and is used to support the receiver cover when it is opened.

5. The slidable receiver cover structure according to claim 4, characterized in that: The receiver cover slide and receiver cover shaft are provided with vertical pin holes, into which pins are inserted to fix the receiver cover shaft.

Images